The Brazilian centre-back joined Paris Saint-Germain from Chelsea for a world record fee for a defender and is reunited with international team-mate Thiago Silva at the heart of Laurent Blanc's back four.

The World Cup proved a traumatic experience for the 27-year-old and his compatriots as they were demolished 7-1 by Germany in the semi-finals but Blanc tipped his new signing to banish those painful memories and forge a formidable partnership with Silva at the Parc des Princes.

The ex-Benfica man's decision-making can prove suspect at times but Luiz is a strong character blessed with natural ability and with Silva alongside him to keep him in check, he should blossom in the French capital.

Also has the versatility to play a more advanced role in front of the back four, if required.

Serge Aurier - Toulouse to Paris Saint-Germain; loan

Aurier, 21, was the standout right-back in the French top flight a year ago with Toulouse and was named in the Ligue 1 team of the season for the 2013/14 campaign.

He then performed admirably for the Ivory Coast in Brazil despite the Elephants' premature exit from the World Cup before Paris Saint-Germain swooped in and snapped up Aurier on a season-long loan with an option to make the move permanent.

Aurier, who spent much of his upbringing in the Paris outskirts, said the move was "a childhood dream" while PSG president Nasser Al-Khelaifi lauded the Ivorian as "one of the most promising young players in world football".

Aurier poses quite the attacking threat, too, as his six goals and six assists made him Europe's most prolific defender last season. Must compete with Gregory van der Wiel for a starting berth, however.

Jordan Ayew - Marseille to Lorient; undisclosed

Ayew, 22, penned a four-year contract at Lorient after struggling for first-team opportunities at Marseille.

The Ghanaian striker impressed during the the second half of last season on loan at strugglers Sochaux where he netted five goals in 17 appearances, arguably his best run in the French top flight, but was unable to prevent the club from suffering relegation to the second tier.

Ayew is charged with the task of replacing Jeremie Aliadiere, who moved to Qatar, and Cameroon international Vincent Aboubakar, sold to FC Porto after scoring 16 Ligue 1 goals last season.

Scored his first goal for the club in the weekend win against Guingamp.